ui_text_input selection

src/ui/ui.c

@@ -1,3 +1,40 @@
+fn ui_caret_t ui_caret_clamp(ui_caret_t c, i32 min, i32 max) {
+    return (ui_caret_t){CLAMP(c.e[0],min,max), CLAMP(c.e[1],min,max), c.ifront};
+}
+
+fn i32 ui_caret_front(ui_caret_t c) { return c.e[c.ifront]; }
+fn i32 ui_caret_back(ui_caret_t c) { return c.e[(c.ifront + 1) % 2]; }
+
+ui_caret_t ui_caret(i32 front, i32 back) {
+    ui_caret_t result = {0};
+    if (front >= back) {
+        result.range.min = back;
+        result.range.max = front;
+        result.ifront = 1;
+    } else {
+        result.range.min = front;
+        result.range.max = back;
+        result.ifront = 0;
+    }
+    return result;
+}
+
+ui_caret_t ui_caret_set_back(ui_caret_t caret, i32 back) {
+    i32 front = ui_caret_front(caret);
+    ui_caret_t result = ui_caret(front, back);
+    return result;
+}
+
+ui_caret_t ui_caret_set_front(ui_caret_t caret, i32 front) {
+    i32 back = ui_caret_back(caret);
+    ui_caret_t result = ui_caret(front, back);
+    return result;
+}
+
+fn ui_caret_t ui_carets(i32 x) {
+    return ui_caret(x, x);
+}
+
 fn s8_t ui_tprint_loc(ui_code_loc_t loc) {
     return s8_printf(tcx.temp, "%s(%d)", loc.file, loc.line);
 }
@@ -242,7 +279,7 @@ fn void ui_text_input_draw(ui_box_t *box) {
         v2f32_t size_min = rn_measure_string(rn_state.main_font, string_min);
         v2f32_t size_max = rn_measure_string(rn_state.main_font, string_max);
         r2f32_t selection_rect = r2f32(rect.min.x + size_min.x, rect.min.y, rect.min.x + size_max.x, rect.min.y + ui_em(1));
-        rn_draw_rect(selection_rect, v4f32(1,1,1,0.2f));
+        rn_draw_rect(selection_rect, v4f32(1,1,1,0.5f));
 
 
         v2f32_t size_front = ti->caret.ifront == 0 ? size_min : size_max;
@@ -337,13 +374,14 @@ fn ui_signal_t ui_text_input(ui_code_loc_t loc, char *buffer, i32 buffer_size) {
                     ti->caret = ui_carets(ui_caret_front(ti->caret) + 1);
                 }
             }
-        } else if (signal.dragging) {
-            v2f32_t size = rn_measure_string(rn_state.main_font, s8_lit("_"));
-            v2f32_t pos = v2f32_sub(ev->mouse_pos, box->final_rect.min);
-            i32 p = (i32)f32_round(pos.x / size.x);
-            if (ev->kind == app_event_kind_mouse_down && ev->mouse_button == app_mouse_button_left) {
-                ti->caret = ui_carets(p);
-            }
+        }
+        v2f32_t size = rn_measure_string(rn_state.main_font, s8_lit("_"));
+        v2f32_t pos = v2f32_sub(ev->mouse_pos, box->final_rect.min);
+        i32 p = (i32)f32_round(pos.x / size.x);
+        if (ev->kind == app_event_kind_mouse_down && ev->mouse_button == app_mouse_button_left) {
+            ti->caret = ui_carets(p);
+        }
+        if (signal.dragging) {
             ti->caret = ui_caret_set_front(ti->caret, p);
         }
         ti->caret = ui_caret_clamp(ti->caret, 0, (i32)ti->len);